package common_class.Demo06;

import java.util.Arrays;

/**
 * @Author Miku
 * @Create 2021/4/11 15:25
 */
public class Test {
    public static void main(String[] args) {
        String content = "miku miku dance";
        System.out.println(content.length());
        System.out.println(content.charAt(0));
        System.out.println(content.contains("miku"));
        System.out.println(Arrays.toString(content.toCharArray()));
        System.out.println(content.indexOf("d"));
        System.out.println(content.lastIndexOf("m"));
        System.out.println(content.toUpperCase());
    }
}
